Metallic Gaskets

William Johnston & Company Limited offer Metallic Ring Type Joint gaskets (RTJs) which are manufactured according to the API 6A and ASME B 16.20 standard for applications at elevated temperatures and pressures.

The small sealing area with high contact pressure results in an excellent seal with high integrity.

Shape and Construction

STANDARD MATERIALS - STANDARD MATERIALS RECOMMENDED BY THE ASME B16.20
ASTM EN Material No Maximum HB Maximum HV Material code
Soft Iron 1.1003 90 56 D
Low CS 1.0038 120 68 S
A182-F5 1.7362 130 72 F5
AISI410 1.4000 170 86 S410
AISI 304 1.4301 160 83 S304
AISI316 1.4401 160 83 S316
AISI 347 1.4550 160 83 S347
DIMENSIONS - STANDARDS FOR RING JOINT GASKETS USED WITH FLANGES
Ring Joints Gaskets Style Ring Joints Gaskets Standard Flange Standard
R ASME B 16.20 API 6A ASME B 16.5 ASMEB 16.47
RX ASME B 16.20 API 6A API 6B
BX API 6A API 6BX

Metallic Gasket

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Contact William Johnston & Company Limited

For more information about our Metallic Gaskets that are available world wide, contact us on +44 (0)141 620 1666, Email us or simply complete our online Enquiry Form.

Failure to select the correct materials or products can result in damage to plant and equipment and personal injury. In specific applications, particularly where critical conditions exist, we suggest you contact us and we will consider with you the most suitable material or product. However, information supplied by William Johnston & Company Limited is intended only as technical co-operation and as a guide to the various uses of different products. No warranty is given in respect of information or recommendations by William Johnston & Company Limited which are only given for guidance and without any guarantee. The customer must satisfy themselves on the suitability of the material or product for the intended purpose. The correct fitting of products is the responsibility of the customer.

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